import { createReadStream } from 'fs';

const readStream = createReadStream('./aaa.txt',{
    start:8,
    end:22,
    highWaterMark:3,
});

readStream.on('data',(data) =>{
    console.log(data.toString());
});

readStream.on('open',(fd) =>{
    console.log('通过流将文件打开',fd);
});

readStream.on('end',()=>{
    console.log('已经读取到end位置');
});

readStream.on('close', ()=>{
    console.log('文件读取结束，并且被关闭');
});